Study on Preparation Technique of SiC/Cu-Al Composite by Pressureless Infiltration

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In order to improve the compatibility between SiC particles and aluminum, the SiC/Cu composite powders were prepared by using chemical plating method to coat a Cu layer on the SiC particles surface. The obtained powders were made into preform and then put it into molten aluminium. SiC/Cu-Al composite were produced by using pressureless infiltration method under argon gas. By scanning electron microscopy (SEM), optical microscopy (OM), X-ray diffraction (XRD),the phase structure and microstructure of SiC/Cu composite powders and SiC/Cu-Al composite were analysed. Moreover, the temperature and soaking time on the effect of SiC/Cu-Al composite infiltration depth and effect were studied. The results show that: Cu coating on the SiC particles surface distributed uniformly; SiC/Cu-Al composite prepared at the condition of 800°C and 2 hours soaking time has a densification microstructure, SiC particles uniformly distributed in the aluminum matrix and there is no Al4C3 brittle phase formation; at 700°C~900°C infiltration, as the temperature growing, infiltration depth increases at first and then decreases; the microstructure of SiC/Cu-Al composite which infiltrated 2 hours is more compact than that 1 hour; Cu coating effectively improved the wettability between SiC particles and molten aluminum, and inhibited the formation of harmful interfacial reaction.

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Periodical:

Advanced Materials Research (Volumes 194-196)

Edited by:

Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang

Pages:

1869-1875

Citation:

S. M. Du et al., "Study on Preparation Technique of SiC/Cu-Al Composite by Pressureless Infiltration", Advanced Materials Research, Vols. 194-196, pp. 1869-1875, 2011

Online since:

February 2011

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$38.00

[1] G.M. Byung, S.L. Dong, S.D. Park, Mater. Chem. Phys. 72 (2001) 42–47.

[2] M. Robins, Electron. Packag. Prod. 40 (2000) 50–59.

[3] M.K. Agha, M.A. Rocazella, J.T. Burke, J. Mater. Sci. 26 (1991) 447–454.

[4] S.B. Ren, X.B. He, X.H. Qu, Mater. Sci. Eng. A 444 (2007) 112–119.

[5] Y. Sahin, Mater. Des. 24 (2003) 671-679.

[6] H. Wang, R. Zhang, J. Mater. Pro. Technol. 197 (2008) 43-48.

[7] Zwe ben C, J. Mater. Sci. 44 (1992) 25-28.

[8] R.E. Everett, R.J. Arsenaulf, Metal Matrix Composites: Processing and Interfaces, p.124, Academic Press. (1991).